/**
 * libcnano for Atari ST
 * @file MemCpy32.c
 * @brief implementation of MemCpy32()
 * @copyright (c) 2014 Matthias Arndt <marndt@asmsoftware.de>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * 
 */

#include <stdint.h>

#include "libcnano.h"

struct long8
{
	uint32_t d[8];
};

/**
 * @brief copy memory in 32 byte chunks (8 longs)
 * @details If the length to copy is not dividable by 32, bytes are left.
 * @param[in] src pointer
 * @param[in] dest pointer
 * @param[in] len in bytes 
 */
void MemCpy32(void * src, void * dest, uint32_t len)
{
    struct long8 * s = (struct long8 *)src; 
	struct long8 * d = (struct long8 *)dest; 

	while(len > sizeof(struct long8))
	{
		*d++=*s++;
		
		len -= sizeof(struct long8);
	}
	
	return;
}

